Rod packing



June 17 1924.

J- G. MCCORKLE RQD PAcKmq Filed Sept. 16. 1919 M55/ff Mcco/eng Mln/5555 @ggz Patented June 17, 1924. j j

unire STATES r j wana Josnri e. MCooRKLnor PITTSBURGH,rnNNsYitvAnIA, Assienogaon.ONE-Harland.

: j `non rAoKING.

nppiicationhiea september 15,1919. `4sferiailivb.,azaisgl To all whom t may concer/n.1 t

,Be ltknown ,that L JOSEFH G- MGCQRKLE,

a citizen of the `'United States, residing at' Pittsburgh, in the county of Allegheny-and State of-Fennsylvania, haveV invented certain new and useful Improvements iiiRod Fack-L ing, of which the following is a spfefcication.

The invention liasffor,fitsjpriinairy object to be understood that in adapting thesame to meet different conditions, various changes in the form, proportion, and minor details of construction may be vresorted to without departing from the nature of the invention as claimed hereinafter. n

Referring to the accompanying drawings, Fig. l is a sectional view of a stuihng box provided with a packing embodying the invention and showing part of a piston rod. Fig. 2 is a plan view of a packing. unit consisting of an inner sectional metal ring and an outer fibrous ring.

Fig. 3 is a sectional view of the packing unit showing one of the joints of the metal ring. n

Fig. 4 is a view similar tok Fig. 3, showing another form of joint of the met-al ring.

Fig. 5 is a plan view of themetalring.

Fig. 6 is a sectional view thereof.

Fig. 7 is a central section of the metal ring in the plane thereof.

Fig. 8 is a sectional view of the fibrous ring, showing the joint.

Corresponding and like parts are referred to in the following description and indicated in the several views of the'drawings by like reference characters. j

The numeral 1 designates a piston rod yor like part adapted to receive a packing en ibodying the invention. The stuiiing box 2 is closed by means of a gland 3 in a manner well understood and the packing is located within the stuffing box and comprises a` plurality of units, each consisting ofan inner metal ring and an outer fibrous ring, both tions which are jointed at 5 and 6. joint 5 is diagonal, whereas the joint 6 contiils Preferably' if fa .iltd .stfiictiirev adniitfof `the"packingbeing placed attratta i .Sheva moet dearly' in; 'Fs- 1. of the ac'coliipaiiyiiig "drawings, the packing coifi' prises'int rm'ediate endy units."` :The: end

fwherea'sithe intermediate unit is sliglitlydif'# ferent in that the metal ring is of concavoconveX form `in cross section, whereas the metal rings of the end units have a portion of their walls made rounding and a portion straight. The metal rings comprise at least two sections to admit of the rings being `placed about the rod l without necessitating 'the removal or displacement of the rod. The `fibrous ring is split, although it may be like- By reason of f wise of sectional formation. the natureof the fibrous ring and having the same split it may betilted about the rod l. The metalring of thel intermediate packing unitis indicatedat 4 and its inner and outer `walls or faces are transversely curved. The

metal ring 4, as shown comprises two sec- The sists of a ymatching tongue and groove, as indicated most clearlyy in Fig. .4. The metal rings are grooved in their outer faces tok form seats in which are tted the rings 7 which preferably are of fibrous construction, although they may consist of any material generally employed for vpacking purposes. The packingrings 7 are split, as indicated at 8 and such splitfis preferably on a di agonalline. An opening is formed centrally through the ypacking rings to increase their resiliency.

The terminal or end metal rings lare iiidicated at 9' and `their outer faces are depressed to form seats in which the packing rings 7.are fitted. The inner wall or face of the rings 9- comprises a rounded' portion 10 and a straight portion 11. The rounded portion l0 is disposed inwardly, whereas the straight portion 1l is arranged outwardly,

soas to align with the openings formed in unit. The manner of joining the sections ofy the metal rings is unimportant and `such joints may be of anyy formation, but ordinarily it is sufficient if each metal ring com-y prises two similar sections which are jointed at diametrically opposite joints which are indicated most clearly at Figs. 2 and 5.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is A packing comprising intermediate and endunits: each unit comprising a sectional metal ring split at an angle lto the aXis of the ring at one end of each section, and provided with an interlocking means at the other end of each section, and a fibrous ring split at an angle to its axis at its adjoiningy ends; the metal ring of the intermediate unit being trough shaped and concavo-convex in cross section, said last named ring being a portion of its inner face terminating in an abutment end wall at right angles to said cylindrical wall, the inner end ring having its inner portion of such thickness as to hold the fibrous end ring above said abutment end wall.

In testimony whereof I aliix my signature in presence of two witnesses.

y JOSEPH G. MCCORKLE.

Witnesses:

HUGH M. SEILLEY, PEARL M. MERIT. 

